const signalSelectList = [
    { signal: 'zs' },
    { signal: 'ww' },
    { signal: 'zl' }
  ];
  
  const value = [
    { signal: 'zs' },
  ];

  const data = signalSelectList.filter(item => !value.some(keyItem => keyItem.signal === item.signal));
  console.log(data);



  const list = [
    {
        "taskName": "demo-task1",
        "totalSubtasks": 326,
        "successfulSubtasks": 0,
        "successRate": 0
    },
    {
        "taskName": "demo-task2",
        "totalSubtasks": 178,
        "successfulSubtasks": 0,
        "successRate": 0
    },{
      name: '1276543231234'
    }, {
      name: '1231234'
    }
]

const newList = list.splice(0,3);
console.log(newList);